TRAPPIST-1
Imaginary Picture of Star TRAPPIST-1
Star Name : TRAPPIST-1
Alternate Name : 2MASS J23062928-0502285
Star Distance (LY/pc): 39.4649 (LY) 12.1000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.1170 (Rsun, estimated)
Stellar Mass (Msun): 0.0800 (Msun/observed) 0.0800 (Msun/estimated)
Spectral type : M8
Metalicity : 0.0400
Absolute Magnitude : 18.39
Apparent Magnitude : 18.80
Right Ascension(RA) : 346.62233
Declination(DEC) : -5.04139
  • This is the TRAPPIST-1 . The star TRAPPIST-1 islocated about 39.5 light-years (12.1 pc) away from our Solar System.
  • The star TRAPPIST-1 has apparent magnitude of 18.8, with absolute magnitude of 18.4.
  • It is 0.1 times more massive and 0.1 times bigger compared with our Sun. The surface temperature is 2550 with its spectral types of M8
  • Number of Extrasolar Planets : 7
  • Name of the 1 Planet TRAPPIST-1 b radius 0.096890 mass 0.002700 orbital distance 0.011110
  • Name of the 2 Planet TRAPPIST-1 c radius 0.094210 mass 0.004340 orbital distance 0.015210
  • Name of the 3 Planet TRAPPIST-1 d radius 0.068900 mass 0.001300 orbital distance 0.021440
  • Name of the 4 Planet TRAPPIST-1 e radius 0.081900 mass 0.002000 orbital distance 0.028170
  • Name of the 5 Planet TRAPPIST-1 f radius 0.093230 mass 0.002100 orbital distance 0.037100
  • Name of the 6 Planet TRAPPIST-1 g radius 0.100500 mass 0.004220 orbital distance 0.045100
  • Name of the 7 Planet TRAPPIST-1 h radius 0.067400 mass 0.001140 orbital distance 0.063000
    (Illustration of the TRAPPIST-1's Planetary System)



    The Star TRAPPIST-1 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.016 AU ( 2465609.7 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.023 AU ( 3408117.0 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.035 AU ( 5193216.1 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.051 AU ( 7642045.0 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TRAPPIST-1)



    Kopparapu's Recent Venus for Star TRAPPIST-1 distance : 0.019 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star TRAPPIST-1 distance : 0.024 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star TRAPPIST-1 distance : 0.023 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star TRAPPIST-1 distance : 0.025 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star TRAPPIST-1 distance : 0.048 AU
    Kopparapu's Outer Boundary for Early Mars for Star TRAPPIST-1 distance : 0.051 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TRAPPIST-1)



  • Original Kopparapu Recent Venus for Star TRAPPIST-1 distance : 0.019 AU
  • Original Kopparapu Runaway Greenhouse for Star TRAPPIST-1 distance : 0.025 AU
  • Original Kopparapu Moist Greenhouse for Star TRAPPIST-1 distance : 0.025 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TRAPPIST-1 distance : 0.049 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TRAPPIST-1 distance : 0.051 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TRAPPIST-1)



    (Position in Stellar Map of star TRAPPIST-1 )



    (Zoomed position in Stellar Map of star TRAPPIST-1 (zoom level 3))